What is 'Acceptable Quality Level  AQL'
A statistical measurement of the maximum number of defective goods considered acceptable in a particular sample size. If the acceptable quality level (AQL) is not reached for a particular sampling of goods, manufacturers will review the various parameters in the production process to determine the areas causing the defects.
The AQL is an important statistic to companies seeking a Six Sigma level of quality control.
BREAKING DOWN 'Acceptable Quality Level  AQL'
The AQL of a product can vary from industry to industry. For example, medical products are more likely to have a more stringent AQL because defective products can result in health risks. Companies have to weigh the added cost associated with the stringent testing and potentially higher spoilage due to a lower defect acceptance with the potential cost of a product recall.

Acceptance Sampling
A statistical measure used in quality control. A company cannot ... 
Product Recall
The process of retrieving defective goods from consumers and ... 
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A qualitycontrol program developed in 1986 by Motorola. Initially, ... 
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A graphic that depicts whether sampled products or processes ... 
Sampling
A process used in statistical analysis in which a predetermined ...

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Sampling is a term used in statistics that describes methods of selecting a predefined representative number of data from a larger data population. 
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Central limit theorem is a fundamental concept in probability theory. 
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Stratified random sampling is a technique best used with a sample population easily broken into distinct subgroups. Samples are then taken from each subgroup based on the ratio of the subgroup’s ...

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